New here, first time Hyundai owner
 

Hey, first time I've owned a Hyundai, it's an 03 sonata 2.7. I'm sold on Hyundai it has a few issues anyone know how to replace the VSS out put sensor and there is moderate rusting that's worrying me on the subframe. How hard is it to change the subframe.

I already replaces the flex pipe and the front wheel hub bearing.

Check to see if there are any recalls on your car first.
Better to have Hyundai pay for replacement of subframe.
On Elantras, the VSS is on the left side axle near the transmission
Not sure about Sonata.